Here are the ways you can raise the skills in MapleStory. The numbers indicate the number of times you raised the skill by that point, not what how many you should raise.
A:
1 Arrow Bomb --> 19 Bow Mastery --> 6 Bow Booster -->
2 Soul Arrow --> 30 Final Attack --> 30 Arrow Bomb -->
20 Power Knockback --> 15 Booster --> 5 Soul Arrow
B:
1 Arrow Bomb --> 19 Bow Mastery --> 6 Bow Booster -->
2 Soul Arrow --> 30 Arrow Bomb --> 30 Final Attack -->
20 Power Knockback --> 15 Booster --> 5 Soul Arrow
C:
1 Arrow Bomb --> 19 Bow mastery --> 6 Bow Booster -->
2 Soul Arrow --> 15 Arrow Bomb --> 30 Final Attack -->
20 Power Knockback --> 30 Arrow Bomb --> 15 Booster -->
5 Soul Arrow
Just know that how you choose to raise the skills lead to where you will hunt.Type A is the best to hunt stone golems and dark stone golems. Type B can hunt almost anywhere approperiate.Type C is the best to hunt zombie monkeys and copper drakes.
Besides that,if you need, you can click these links to related links: MapleStory mesos and Maplestory power leveling.